Answer:
Given the equation, the radius of the circle is 7.
Step-by-step explanation:
We are given the equation, x² + y² = 49.
In order to find the radius, we have to calculate the square root of 49. This is because the original form of the equation is x² + y² = r².
So, the radius of the circle is 7.
Answer:
2.22%
Step-by-step explanation:
$8400 is invested in an account earning 2.2% interest (APR), compounded monthly.
So, the value of the account after t years will be given by
{Rounded to the four decimal places} (Answer)
Now, for t = 1 year, f(1) = $8586.67
So, the percentage of growth per year (APY) = 
% {Rounded to the nearest hundredth of percent} (Answer)
Answer:
there are no seven in there
Answer:inversely proportional
Step-by-step explanation:
As the value of x increase the value of y decrease
Answer:
Cab B charged more
It charged $(30-x) more
Step-by-step explanation:
Here, we want to know which of two cabs charged more for a ride from the airport to the mall.
To know the cab that charged more, we shall be substituting any same value of x in both of the fees
Let’s say x is 10
Thus 5x + 20 becomes 5(10) + 20 = 50 + 20 = 70
while 4x + 50 becomes 4(10) + 50 = 40 + 50 = 90
Clearly we can see that 4x + 50 is greater then 5x + 20, so we can conclude that 4x + 50 is a greater fee
Now since we know the one that’s higher, we can now know the value by which it is higher
That would be (4x + 50)-(5x + 20)
= 4x + 50 -5x -20
= 4x-5x + 50-20
= -x + 30 or simply 30-x
